This is my first book btw.
Mattheo may differ from what Yasmine wrote him as and i apologise if that upsets you.
I will describe Sylvia, but my idea of Sylvia was Bella swan from twilight.
I don't own any of these characters except my OC Sylvia Snape.
Mattheo riddle is owned by Yasmin Amaro, and the rest are owned by JK Rowling. I do not take credit in making the characters except Sylvia.
Some parts may not follow the timeline of the books / films because it needs to fit with the story.
This will start in half blood Prince era and Mattheo will appear near the middle of chapter two.